Aileen finds out that Claude's aide, Keith Eigrid, has been selling demons. Keith tells Aileen about the reason why and reminisces about their past. Now that Aileen knows his true feelings, she decides to cooperate with Keith to prevent Claude from despairing about humanity and turning into a demon. At the same time, Cédric and Lilia visits the demon lord's castle to tell Claude Keith's secret?!
I'll grant you a happy ending where demons 
and humans live together peacefully.
سأمنحك نهاية سعيدة يعيش فيها
.الشياطين والبشر معًا في سلام
Sogar dein Wunsch vom friedlichen
Zusammenleben von Mensch und Dämon
Te daré un final feliz donde demonios
y humanos vivan en paz.
Te daré un final feliz donde demonios
y humanos vivan en paz.
Je ferai tout
pour que les démons et les humains
Farò in modo di donarti un lieto fine
Eu lhe darei um final feliz onde
demônios e humanos convivam em paz.
где чудовища и люди 
живут вместе в мире и покое.